Hair straightener



FIG. 1 is a perspective view of an embodiment of a hair straightener in an open position.

FIG. 2 is a side elevational view of the hair straightener of FIG. 1 in an open position.

FIG. 3 is side elevational view of the hair straightener of FIG. 1 in an open position taken 180° from FIG. 2.

FIG. 4 is a top plan view of the hair straightener of FIG. 1.

FIG. 5 is a bottom plan view of the hair straightener of FIG. 1.

FIG. 6 is a back elevational view of the hair straightener of FIG. 1 in an open position; and,

FIG. 7 is front elevational view of the hair straightener of FIG. 1 in an open position. 

The ornamental design for hair straightener, as shown and described. 